Method of manufacturing plowshares.



v ,H. c. MIL- LAR & J. 'MEYERS, METHOD OF MANUFACTURING PLOWSHARES.

ARPLICATION FILED DBO. 26, 190B.

963,614. PatentedJuly 5, 1910.

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w amzntovs H. c. MILLAR -&J'. MEYERS. METHOD OF MANUFAGTUR'ING PLOWSHARES APPLICATION FILED DBO. 26,1908. 7

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H. c, MILLAR & J. MEYERSQ METHOD OF MANUFACTURING" PLOWSHABES.

nrmunron 211.111) no. as, 1908. 4 Patented Julyfi, 1910. I i a SHEETS-SHEBTi.

UNITED STATES PATENT OFFICE.

HARRY G. MILLAR AND JOSEPH MEYERS, OF CARNEGIE, PENNSYLVANIA.

METHOD OF MANUFACTURING PLOWSHARES.

T 0 all whom it may concern:

Be it known that we, HARRY C. MILLAR and Josnrri MEYERS, citizens of the United States of America, residing at Carnegie, in the county of Allegheny-and State of Penn sylvania, have invented certain new and useful Improvements in Methods of Manufacturing Plowshares, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a method of manufacturing plow shares, and the object of our invention is to provide a novel method of rolling, shearing, pressing and bending a blank piece of metal to conform to a plow share, ready to be punched and attached to a plow standard or post.

Briefly described, the method consists in forming a metallic blank, to be hereinafter termed a skelp, with a ribbed portion thicker than the remainder of the skelp, the thin portion of the skelp eventually forming the share, while the ribbed portion forms the share bar. The ribbed skelp is then formed into a share blade and a share bar, the bar being integral with the blade and then subsequently the blade is shaped to conform to the standard or the post of a plow, and also provided with a feathered edge, and further bent at right angles with respect to one side of the bar whereby the bar is positioned properly with respect to the body of the share blade.

The method will be hereinafter described in detail and pointed out in the claims hereunto appended.

As showing one form of a machine in which a method for manufacturing plow shares can be carried out in accordance with this invention, reference is had to the accompanying drawings in which Figure 1 is a front elevation of the machine, Fig. 2 is a plan of the same, Fig. 3 is a plan of a blank or piece of skelp from which a plow share is formed, Fig. 4 is an edge view of the same, Fig. 5 is a plan of a piece of skelp being subjected to the first rolling operation, Fig. 6 is an edge view of the same, Fig. 7 is a rear elevation of a por tion' of the same, Fig. 8 is an end view of the machine, partly broken away and partly in section, illustrating a train of gears for operating the machine, Fig. 9 is an end view of detached primary rolls for bending and shaping a cut and sheared blank, Fig. 10 is a front elevation of the same, Fig. 11 is a Specification of Letters Patent.

Application filed December 26, 1908.

Patented July 5, 1910.

Serial No. 469,300.

plan of a cut and sheared blank, Fig. 12 is an end view of detached secondary rolls for completing the formation of a share, Fig. 13 is a plan of a partly completed share, Fig. 14 is a plan of a completed share, Fig. 15 is a front elevation of the secondary rolls illustrated in Fig. 12, and Fig. 16 is a perspective view of a completed plow share.

In the accompanying drawings, 1 designates foundation frames supporting two vertical housings 2 and 3. In these housings are arranged adjustable bearings 4. for longitudinal shafts 5 and 6, and upon said shafts are mounted rolls 7 and 8 respectively. The shafts 5 and 6 protrude beyond the housing 2 and are provided with meshing gear wheels 9 and 10 respectively, whereby the shafts can be driven in unison.

The shaft 6 protrudes beyond the housing 2 and is provided with a large loose gear wheel 11 having a clutch member 12 adapted to be engaged by a clutch member 13 slidably keyed upon the shaft 6 to rotate therewith. The large gear wheel 11 meshes with a small gear wheel 14 mounted upon a shaft 15, journaled in bearings 16 and 17 carried by the housing 3 and the foundation frames 1.

J ournaled in the foundation frames 1 beneath the clutch member 13 is a rock shaft 18 having the ends thereof provided with cranks 19 and 20, the former being connected by a coil spring 21 to a hook 22, carried by the foundation frames 1, while the latter is provided with a tread plate 23. The shaft 18 is provided with a yoke 24 having inwardly projecting pins 25 protruding into an annular groove 26 formed in the clutch member 13, whereby when the plate 23 is tread upon, the clutch member 13 can be drawn into engagement with the clutch member 12 to set the rolls 7 and 8 in motion.

The roll 8 intermediate the ends thereof is provided with an annular groove 26, this groove in conjunction with the smooth surface of the roll 7 providing a pass for the initiatory treatment of a piece of skelp prior to cutting and shearing the same.

The rolls 7 and 8 adjacent to the housing 2 are reduced, as at 27, and upon the reduced periphery of said rolls are located dies 28, 29 and 30, these dies being shrunk upon the rolls or otherwise secured thereon. The dies 28 to 30 inclusive are of such shape that the die 30 will interlock with the dies 28 and 29 and will shear and cut a blank to the desired shape, as will hereinafter appear.

V The shafts and 6 protruding beyond the gear wheels 9 and 10 are provided with detachable secondary and finishing rolls, and it is in this connection that we reserve the right to extend the shafts 5 and 6 and mount the finishing rolls thereon inproximity to the secondary rolls. The secondary rolls best shown in Figs. 1, 9 and 10 areprovided with enlargements 31 and 32, these enlargements beingapproximately the same length as the rolls 33 and 34, and providing clearance at the outer ends of the rolls, as designated at 35 for a purpose that will hereinafter appear. The enlargements 31 and 32 are adapted to confront one another at a certain position of 1 the rolls 33 and 34, and these enlargements are shaped whereby the enlargement 31 will 1 practically interlock with the enlargement- 32. In other words, the space between the enlargements when confronting is tapered, whereby a blank will be given a feather edge when passed between the enlargements. In order that the blank can bebent, the enlargement 32 is provided with a longitudinal slot 36, and the function of this'slot' 3 rolls at the groove 26 the same as the thickness of the skelp, the skelp will be reduced upon one edge, leaving the opposite edge the natural thickness, or in other words, a 'ribbed skelp will be provided.

(See Figs.

5 and 6.) The reduced portion of the skelp I which we have designated 40 is employed of the share.

for forming the share proper, while the ribbed portion designated 41 forms the bar The blank is now passed be tween the rolls 7 and 8 at the reduced portion 27 thereof, whereby theblank will be operated upon by the'dies 28 to 30 inclusive. The rib portion 41 of the blank 7 travels upon that portion of the die 30 designated 42", whilethe dies 28, 29 and 30 shear the reduced portion 40 of theblank to form a share blade 42, (see Fig. 11). V The operation of the dies 28, 29 and 30 removes suflicient material from the reduced port-ion 40to leave a blade of the necessary shape to produce aplow share. The blade 42 extends from one edge of the bar 41. The blank shown in Fig. 11 is now ready to be operated upon by the secondary rolls 33 and 34. The bar 41 is placed in the longitudinal groove 36 of the roll 34, whereby as these rolls rotate, the blade 42 will be bent at right angles with respect to one side of By reference to Fig. 10 of the drawt'ween said enlargements is gradually tapered, and with the bar 41 having clearance at the outer ends of the rolls, the blade 42 can be passed between the enlargements to provide the outer edge thereof with what we term a feather edge. After this fourth operation, the blank as shown in Fig.

13 is in condition for the finishing rolls 37 and 38 which are designed to bend the share blade 42 (see Fig. 14), whereby the share blade will conform to the post or standard of a plow. The enlargements 39 of the finishing rolls 37 and 38 are shaped to curve the share blade 42, and the confronting depressions 43 of the enlargements 39 provide clearance for the bar 41, while the share blade 42 is being rounded or shaped. The different rolling and pressing steps have a tendency to polish the article as it is com pleted. 4

It is thought'thatthe manner of carrying out the method will be understood and that any suitable source of power as a motor can be coupled to the shaft 15.

We would have it understood that while we have herein described the cutting, shearing andshaping of plow shares, that articles ofvarious shapes canalso be produced by the rolling process.

Having now described our invention what we claim as new, is

1. The method ofmanufacturing plow I shares consisting in forming a ribbed blank into a share blade and a bar integral with the blade, then subsequently feathering the edge of the blade and bending the blade at an angle with respect to one side of the bar, and then curving the blade.

2. A method of manufacturing plow shares consisting'in forming a ribbed blank into a share bar and a share blade integral with and extending from one edge of the bar, then subsequently feathering the edge of the blade and bending the blade at an angle with respect to one side of the bar, and then curving the blade. p

In testimony whereof we afiix our signatures in the presence of two witnesses.

HARRY C. MILLAR. JOSEPH MEYERS. 

